Ground Operation and Servicing Flashcards
During starting of a turbine powerplant using a compressed air starter, a hung start occurred. Select the
proper procedure.
shut the engine down
A hung start in a jet engine is often caused by
starter cutting off soon
Which statement below reflects a typical requirement when towing some aircraft?
if the aircraft has a steerable nosewheel, the torque-link lock should be set to full swivel
Which statement(s) is/are true regarding tiedown of small aircraft?
1. Manila (hemp) rope has a tendency to stretch when it gets wet.
2. Nylon or dacron rope is preferred to manila rope.
3. The aircraft should be headed downwind in order to eliminate or minimize wing lift.
4. Leave the nosewheel or tailwheel unlocked.
2
When approaching the front of an idling jet engine, the hazard area extends forward of the engine
approximately
25 feet
Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?
carbon dioxide
(Refer to Figure 50.) Identify the signal to engage rotor on a rotorcraft.
3
If a radial engine has been shut down for more than 30 minutes, the propeller should be rotated
through at least two revolutions to
check for hydraulic lock
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control
lever in the
full rich position
The most important condition to be monitored during start after fuel flow begins in a turbine engine is
the
EGT, TIT, and ITT
Which of the following conditions has the most potential for causing engine damage when starting or
attempting to start a turbine engine?
hot start
How is a flooded engine, equipped with a float-type carburetor, cleared of excessive fuel?
crank the engine with the starter or by hand, with the mixture control in cut off , ignition switch off,
and the throttle fully open, until the fuel charged has been cleared
(Refer to Figure 51.) Which marshalling signal should be given if a taxiing aircraft is in imminent danger
of striking an object?
3
Generally, when an induction fire occurs during starting of a reciprocating engine, the first course of
action should be to
continue cranking and start the engine if posibble
When starting and ground operating an aircraft’s engine, the aircraft should be positioned to head into
the wind primarily
for engine cooling purposes
When approaching the rear of an idling turbojet or turbofan engine, the hazard area extends aft of the
engine approximately
100 feet
If a hot start occurs during starting of a turbine powerplant, what is the likely cause?
the fuel/air mixture was excessively rich
What effect, if any, will aviation gasoline mixed with jet fuel have on a turbine engine?
the tetraethyl lead in the gasoline forms deposits on the turbine blades
(1) Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants better.
(2) Viscosity has no relation to contamination of fuel.
Regarding the above statements,
only no. 1 is true
When towing a large aircraft
a person should be In the cockpit to operate the brakes
Weather vaning tendency is greatest when taxiing
a tail wheel type airplane in a direct crosswind
When taxiing an airplane with a quartering tailwind, the elevators and
upwind aileron should be held in the down position
When taxiing (or towing) an aircraft, a flashing red light from the control tower means
move clear of the runway/taxiway immediately
A person should approach or leave a helicopter in the pilot’s field of vision whenever the engine is
running in order to avoid
tail rotor
When taxiing (or towing) an aircraft, a flashing white light from the control tower means
return to starting point
When taxiing (or towing) an aircraft, an alternating red and green light from the control tower means
ok to proceed but use extreme caution
When stopping a nosewheel-type airplane after taxiing (or towing), the nosewheel should be left
pointed straight ahead
When first starting to move an aircraft while taxiing, it is important to
test the brakes
The color of 100LL fuel is
blue
How are aviation fuels, which possess greater antiknock qualities than 100 octane, classified?
by performance number
Why is ethylene dibromide added to aviation gasoline?
scavenge lead oxide from the cylinder combustion chambers
Both gasoline and kerosene have certain advantages for use as turbine fuel. Which statement is true in
reference to the advantages of each?
kerosene has higher heat energy/value per unit volume than gasoline
What must accompany fuel vaporization?
an absorption of heat
Characteristics of detonation are
rapid rise in cylinder pressure, excessive cylinder head temperature, and a decrease in engine
power
A fuel that vaporizes too readily may cause
vapor lock
Jet fuel number identifiers are
type numbers and have no relation to the fuel’s performance in the aircraft engine
Jet fuel number identifiers are
lead content and color
Characteristics of aviation gasoline are
high heat value, high volatility
Tetraethyl lead is added to aviation gasoline to
improves the gasoline performances in the engine
A fuel that does not vaporize readily enough can cause
hard starting
